David L. Cohen (born 1955) is an American businessman, attorney, lobbyist, and diplomat who had served the United States ambassador to Canada.

He also served as chairman of the board of trustees for the University of Pennsylvania and was chief of staff to former Philadelphia Mayor Ed Rendell.

[2][3] Born to a Jewish family in New York,[4] Cohen graduated from Swarthmore College in 1977, where he triple-majored in political science, history, and economics.

"[12] In 2009, he was included in "The Pennsylvania Report 100" list of influential figures in state politics, noting him as "one Philadelphian that all statewide Dems should know.

[16] On July 21, 2021, President Joe Biden announced his intent to nominate Cohen as the United States ambassador to Canada.